#include<iostream>
using namespace std;
int main()
{
	int firstvalue, secondvalue;
	int *mypointer;
	mypointer = &firstvalue;
	*mypointer = 10;
	mypointer = &secondvalue;
	*mypointer = 20;
	cout<<"firstvalue is"<<firstvalue<<'\n';
	cout<<"secondvalue is"<<secondvalue<<'\n';
	return 0;
}